diff --git a/.gitignore b/.gitignore
index 10d6d8a92..1daa455e4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,8 +33,8 @@ build/macosx/libastylej*
 build/macosx/appbundler*.jar
 build/macosx/appbundler*.zip
 build/macosx/appbundler
-build/macosx/appbundler-1.0ea-arduino2
-build/macosx/appbundler-1.0ea-upstream1
+build/macosx/appbundler-1.0ea-arduino*.zip
+build/macosx/appbundler-1.0ea-upstream*.zip
 build/linux/work/
 build/linux/dist/*.tar.gz
 build/linux/dist/*.tar.bz2
diff --git a/arduino-core/src/processing/app/BaseNoGui.java b/arduino-core/src/processing/app/BaseNoGui.java
index 8aeffcc15..923123299 100644
--- a/arduino-core/src/processing/app/BaseNoGui.java
+++ b/arduino-core/src/processing/app/BaseNoGui.java
@@ -186,21 +186,8 @@ public class BaseNoGui {
   }
 
   static public File getContentFile(String name) {
-    File path = new File(System.getProperty("user.dir"));
-
-    if (OSUtils.isMacOS()) {
-      if (System.getProperty("WORK_DIR") != null) {
-        path = new File(System.getProperty("WORK_DIR"));
-      } else {
-        try {
-          path = new File(BaseNoGui.class.getProtectionDomain().getCodeSource().getLocation().toURI().getPath()).getParentFile();
-        } catch (URISyntaxException e) {
-          throw new RuntimeException(e);
-        }
-      }
-    }
-
-    return new File(path, name);
+    File installationFolder = new File(System.getProperty("APP_DIR"));
+    return new File(installationFolder, name);
   }
 
   static public TargetPlatform getCurrentTargetPlatformFromPackage(String pack) {
diff --git a/build/build.xml b/build/build.xml
index d4b54fb22..2adb126dc 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -305,16 +305,17 @@
     <mkdir dir="${staging_folder}/work" />
 
     <antcall target="unzip">
-      <param name="archive_file" value="${staging_folder}/appbundler-1.0ea-upstream1.jar.zip" />
-      <param name="archive_url" value="http://downloads.arduino.cc/appbundler-1.0ea-upstream1.jar.zip" />
-      <param name="final_folder" value="${staging_folder}/appbundler-1.0ea-upstream1" />
-      <param name="dest_folder" value="${staging_folder}/appbundler-1.0ea-upstream1" />
+      <param name="archive_file" value="${staging_folder}/appbundler-1.0ea-arduino3.jar.zip" />
+      <param name="archive_url" value="http://downloads.arduino.cc/appbundler-1.0ea-arduino3.jar.zip" />
+      <param name="final_folder" value="${staging_folder}/appbundler-1.0ea-arduino3" />
+      <param name="dest_folder" value="${staging_folder}/appbundler-1.0ea-arduino3" />
     </antcall>
 
-    <taskdef name="bundleapp" classname="com.oracle.appbundler.AppBundlerTask" classpath="${staging_folder}/appbundler-1.0ea-upstream1/appbundler-1.0ea-upstream1.jar"/>
+    <taskdef name="bundleapp" classname="com.oracle.appbundler.AppBundlerTask" classpath="${staging_folder}/appbundler-1.0ea-arduino3/appbundler-1.0ea-arduino3.jar"/>
 
     <bundleapp
             jvmRequired="1.8"
+            jrepreferred="true"
             outputdirectory="${staging_folder}/work"
             name="Arduino"
             displayname="Arduino"
@@ -326,6 +327,7 @@
             icon="macosx/template.app/Contents/Resources/processing.icns"
             mainclassname="processing.app.Base"
             copyright="Arduino LLC"
+            applicationCategory="public.app-category.education"
             minimumsystemversion="10.7"
             highresolutioncapable="true">
 
@@ -336,11 +338,12 @@
 
       <classpath refid="runtime.jars"/>
 
-      <option value="-Dapple.awt.application.name=Arduino" />
+      <option value="-Dapple.awt.application.name=Arduino"/>
       <option value="-Dapple.laf.useScreenMenuBar=true"/>
       <option value="-Dcom.apple.macos.use-file-dialog-packages=true"/>
       <option value="-Dcom.apple.smallTabs=true"/>
-      <option value="-Dcom.apple.macos.useScreenMenuBar=true" />
+      <option value="-Dcom.apple.macos.useScreenMenuBar=true"/>
+      <option value="-DAPP_DIR=$APP_ROOT/Contents/Java"/>
 
       <!--
       <option value="-Dapple.awt.showGrowBox=false"/>
diff --git a/build/linux/dist/arduino b/build/linux/dist/arduino
index 4e58bce3a..48bf7456a 100755
--- a/build/linux/dist/arduino
+++ b/build/linux/dist/arduino
@@ -33,4 +33,5 @@ if [ -x ./java/bin/java ]; then
   JAVA=./java/bin/java
 fi
 
-$JAVA -Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel $SPLASH processing.app.Base --curdir "$CURDIR" "$@"
+$JAVA -DAPP_DIR="$APPDIR" -Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel $SPLASH processing.app.Base --curdir "$CURDIR" "$@"
+
diff --git a/build/macosx/appbundler-1.0ea-arduino3.jar.zip.sha b/build/macosx/appbundler-1.0ea-arduino3.jar.zip.sha
new file mode 100644
index 000000000..71aec86b5
--- /dev/null
+++ b/build/macosx/appbundler-1.0ea-arduino3.jar.zip.sha
@@ -0,0 +1 @@
+247d19a71672171ce2eda25704121375f04c5e1f
diff --git a/build/macosx/appbundler-1.0ea-upstream1.jar.zip.sha b/build/macosx/appbundler-1.0ea-upstream1.jar.zip.sha
deleted file mode 100644
index b8179c64c..000000000
--- a/build/macosx/appbundler-1.0ea-upstream1.jar.zip.sha
+++ /dev/null
@@ -1 +0,0 @@
-5bb6377a65edf7af7b5b3820711bab0e377bdee1
diff --git a/build/windows/launcher/config.xml b/build/windows/launcher/config.xml
index e1822cdc2..899dff244 100644
--- a/build/windows/launcher/config.xml
+++ b/build/windows/launcher/config.xml
@@ -3,43 +3,43 @@
   <headerType>gui</headerType>
   <jar>lib</jar>
   <outfile>arduino.exe</outfile>
-  <chdir>.</chdir>
   <errTitle>Arduino</errTitle>
   <downloadUrl>http://www.oracle.com/technetwork/java/javase/downloads/index.html</downloadUrl>
   <icon>application.ico</icon>
   <classPath>
     <mainClass>processing.app.Base</mainClass>
-    <cp>lib/antlr.jar</cp>
-    <cp>lib/apple.jar</cp>
-    <cp>lib/arduino-core.jar</cp>
-    <cp>lib/bcpg-jdk15on-152.jar</cp>
-    <cp>lib/bcprov-jdk15on-152.jar</cp>
-    <cp>lib/commons-codec-1.7.jar</cp>
-    <cp>lib/commons-compress-1.8.jar</cp>
-    <cp>lib/commons-exec-1.1.jar</cp>
-    <cp>lib/commons-httpclient-3.1.jar</cp>
-    <cp>lib/commons-lang3-3.3.2.jar</cp>
-    <cp>lib/commons-logging-1.0.4.jar</cp>
-    <cp>lib/ecj.jar</cp>
-    <cp>lib/guava-18.0.jar</cp>
-    <cp>lib/jackson-annotations-2.2.3.jar</cp>
-    <cp>lib/jackson-core-2.2.3.jar</cp>
-    <cp>lib/jackson-databind-2.2.3.jar</cp>
-    <cp>lib/jackson-module-mrbean-2.2.3.jar</cp>
-    <cp>lib/java-semver-0.8.0.jar</cp>
-    <cp>lib/jmdns-3.4.1.jar</cp>
-    <cp>lib/jna-4.1.0.jar</cp>
-    <cp>lib/jna-platform-4.1.0.jar</cp>
-    <cp>lib/jsch-0.1.50.jar</cp>
-    <cp>lib/jssc-2.8.0.jar</cp>
-    <cp>lib/pde.jar</cp>
-    <cp>lib/rsyntaxtextarea-2.5.6.1+arduino.jar</cp>
+    <cp>%EXEDIR%/lib/antlr.jar</cp>
+    <cp>%EXEDIR%/lib/apple.jar</cp>
+    <cp>%EXEDIR%/lib/arduino-core.jar</cp>
+    <cp>%EXEDIR%/lib/bcpg-jdk15on-152.jar</cp>
+    <cp>%EXEDIR%/lib/bcprov-jdk15on-152.jar</cp>
+    <cp>%EXEDIR%/lib/commons-codec-1.7.jar</cp>
+    <cp>%EXEDIR%/lib/commons-compress-1.8.jar</cp>
+    <cp>%EXEDIR%/lib/commons-exec-1.1.jar</cp>
+    <cp>%EXEDIR%/lib/commons-httpclient-3.1.jar</cp>
+    <cp>%EXEDIR%/lib/commons-lang3-3.3.2.jar</cp>
+    <cp>%EXEDIR%/lib/commons-logging-1.0.4.jar</cp>
+    <cp>%EXEDIR%/lib/ecj.jar</cp>
+    <cp>%EXEDIR%/lib/guava-18.0.jar</cp>
+    <cp>%EXEDIR%/lib/jackson-annotations-2.2.3.jar</cp>
+    <cp>%EXEDIR%/lib/jackson-core-2.2.3.jar</cp>
+    <cp>%EXEDIR%/lib/jackson-databind-2.2.3.jar</cp>
+    <cp>%EXEDIR%/lib/jackson-module-mrbean-2.2.3.jar</cp>
+    <cp>%EXEDIR%/lib/java-semver-0.8.0.jar</cp>
+    <cp>%EXEDIR%/lib/jmdns-3.4.1.jar</cp>
+    <cp>%EXEDIR%/lib/jna-4.1.0.jar</cp>
+    <cp>%EXEDIR%/lib/jna-platform-4.1.0.jar</cp>
+    <cp>%EXEDIR%/lib/jsch-0.1.50.jar</cp>
+    <cp>%EXEDIR%/lib/jssc-2.8.0.jar</cp>
+    <cp>%EXEDIR%/lib/pde.jar</cp>
+    <cp>%EXEDIR%/lib/rsyntaxtextarea-2.5.6.1+arduino.jar</cp>
   </classPath>
   <jre>
     <path>java</path>
     <runtimeBits>32</runtimeBits>
-    <opt>-splash:./lib/splash.png</opt>
+    <opt>-splash:%EXEDIR%/lib/splash.png</opt>
     <opt>-Dsun.java2d.d3d=false</opt>
+    <opt>-DAPP_DIR="%EXEDIR%"</opt>
   </jre>
   <versionInfo>
     <fileDescription>Arduino IDE</fileDescription>
diff --git a/build/windows/launcher/config_debug.xml b/build/windows/launcher/config_debug.xml
index 83fed70a9..de2ad1f56 100644
--- a/build/windows/launcher/config_debug.xml
+++ b/build/windows/launcher/config_debug.xml
@@ -3,42 +3,42 @@
   <headerType>console</headerType>
   <jar>lib</jar>
   <outfile>arduino_debug.exe</outfile>
-  <chdir>.</chdir>
   <errTitle>Arduino</errTitle>
   <downloadUrl>http://www.oracle.com/technetwork/java/javase/downloads/index.html</downloadUrl>
   <icon>application.ico</icon>
   <classPath>
     <mainClass>processing.app.Base</mainClass>
-    <cp>lib/antlr.jar</cp>
-    <cp>lib/apple.jar</cp>
-    <cp>lib/arduino-core.jar</cp>
-    <cp>lib/bcpg-jdk15on-152.jar</cp>
-    <cp>lib/bcprov-jdk15on-152.jar</cp>
-    <cp>lib/commons-codec-1.7.jar</cp>
-    <cp>lib/commons-compress-1.8.jar</cp>
-    <cp>lib/commons-exec-1.1.jar</cp>
-    <cp>lib/commons-httpclient-3.1.jar</cp>
-    <cp>lib/commons-lang3-3.3.2.jar</cp>
-    <cp>lib/commons-logging-1.0.4.jar</cp>
-    <cp>lib/ecj.jar</cp>
-    <cp>lib/guava-18.0.jar</cp>
-    <cp>lib/jackson-annotations-2.2.3.jar</cp>
-    <cp>lib/jackson-core-2.2.3.jar</cp>
-    <cp>lib/jackson-databind-2.2.3.jar</cp>
-    <cp>lib/jackson-module-mrbean-2.2.3.jar</cp>
-    <cp>lib/java-semver-0.8.0.jar</cp>
-    <cp>lib/jmdns-3.4.1.jar</cp>
-    <cp>lib/jna-4.1.0.jar</cp>
-    <cp>lib/jna-platform-4.1.0.jar</cp>
-    <cp>lib/jsch-0.1.50.jar</cp>
-    <cp>lib/jssc-2.8.0.jar</cp>
-    <cp>lib/pde.jar</cp>
-    <cp>lib/rsyntaxtextarea-2.5.6.1+arduino.jar</cp>
+    <cp>%EXEDIR%/lib/antlr.jar</cp>
+    <cp>%EXEDIR%/lib/apple.jar</cp>
+    <cp>%EXEDIR%/lib/arduino-core.jar</cp>
+    <cp>%EXEDIR%/lib/bcpg-jdk15on-152.jar</cp>
+    <cp>%EXEDIR%/lib/bcprov-jdk15on-152.jar</cp>
+    <cp>%EXEDIR%/lib/commons-codec-1.7.jar</cp>
+    <cp>%EXEDIR%/lib/commons-compress-1.8.jar</cp>
+    <cp>%EXEDIR%/lib/commons-exec-1.1.jar</cp>
+    <cp>%EXEDIR%/lib/commons-httpclient-3.1.jar</cp>
+    <cp>%EXEDIR%/lib/commons-lang3-3.3.2.jar</cp>
+    <cp>%EXEDIR%/lib/commons-logging-1.0.4.jar</cp>
+    <cp>%EXEDIR%/lib/ecj.jar</cp>
+    <cp>%EXEDIR%/lib/guava-18.0.jar</cp>
+    <cp>%EXEDIR%/lib/jackson-annotations-2.2.3.jar</cp>
+    <cp>%EXEDIR%/lib/jackson-core-2.2.3.jar</cp>
+    <cp>%EXEDIR%/lib/jackson-databind-2.2.3.jar</cp>
+    <cp>%EXEDIR%/lib/jackson-module-mrbean-2.2.3.jar</cp>
+    <cp>%EXEDIR%/lib/java-semver-0.8.0.jar</cp>
+    <cp>%EXEDIR%/lib/jmdns-3.4.1.jar</cp>
+    <cp>%EXEDIR%/lib/jna-4.1.0.jar</cp>
+    <cp>%EXEDIR%/lib/jna-platform-4.1.0.jar</cp>
+    <cp>%EXEDIR%/lib/jsch-0.1.50.jar</cp>
+    <cp>%EXEDIR%/lib/jssc-2.8.0.jar</cp>
+    <cp>%EXEDIR%/lib/pde.jar</cp>
+    <cp>%EXEDIR%/lib/rsyntaxtextarea-2.5.6.1+arduino.jar</cp>
   </classPath>
   <jre>
     <path>java</path>
     <runtimeBits>32</runtimeBits>
     <opt>-Dsun.java2d.d3d=false</opt>
+    <opt>-DAPP_DIR="%EXEDIR%"</opt>
   </jre>
   <versionInfo>
     <fileDescription>Arduino IDE</fileDescription>